Modular chair



FIG. 1 is a perspective view of a new design of a modular chair;

FIG. 2 is a top plan view of the modular chair with reference to FIG. 1;

FIG. 3 is a rear elevational, also with reference to FIG. 1;

FIG. 4 is a front view; and,

FIG. 5 is a right side (when viewed from the front) elevational view, the left side elevational view being a mirror image thereof. 

The ornamental design for a modular chair, as shown and described. 